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Line 19... |
// along with this program. If not, see <http://www.gnu.org/licenses/>.
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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//
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// Extra state required for some datapath operations.
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// Extra state required for some datapath operations.
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// ============================================================================
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// ============================================================================
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//
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//
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CALC:
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task calc_tsk;
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begin
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begin
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state <= IFETCH;
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state <= IFETCH;
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res <= calc_res;
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res <= alu_out;
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wadr <= radr; // These two lines for the shift/inc/dec ops
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wadr <= radr; // These two lines for the shift/inc/dec ops
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store_what <= `STW_CALC;
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store_what <= `STW_CALC;
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case(ir[7:0])
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case(ir9)
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`BMS_ZPX,`BMS_ABS,`BMS_ABSX,
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`BMC_ZPX,`BMC_ABS,`BMC_ABSX,
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`BMF_ZPX,`BMF_ABS,`BMF_ABSX,
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`ASL_ZPX,`ASL_ABS,`ASL_ABSX,
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`ASL_ZPX,`ASL_ABS,`ASL_ABSX,
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`ROL_ZPX,`ROL_ABS,`ROL_ABSX,
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`ROL_ZPX,`ROL_ABS,`ROL_ABSX,
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`LSR_ZPX,`LSR_ABS,`LSR_ABSX,
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`LSR_ZPX,`LSR_ABS,`LSR_ABSX,
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`ROR_ZPX,`ROR_ABS,`ROR_ABSX,
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`ROR_ZPX,`ROR_ABS,`ROR_ABSX,
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`INC_ZPX,`INC_ABS,`INC_ABSX,
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`INC_ZPX,`INC_ABS,`INC_ABSX,
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`DEC_ZPX,`DEC_ABS,`DEC_ABSX:
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`DEC_ZPX,`DEC_ABS,`DEC_ABSX:
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state <= STORE1;
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state <= STORE1;
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endcase
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endcase
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end
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end
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endtask
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No newline at end of file
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No newline at end of file
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